The fatigue behaviour of three-dimensional stress concentrations
By D. Bellett, D. Taylor, S. Marco, E. Mazzeo, Jerome Guillois, T. Pircher. 2005
176 citations recorded by the source corpus.
This paper is concerned with the fatigue behaviour of complex, three-dimensional (3D), stress concentrations (i.e. features which cannot be modelled as simple two-dimensional (2D) notches). The purpose of the paper is to present experimental evidence to show that commonly used methods for notch fatigue assessment result in conservative predictions when applied to certain 3D geometries, in both welded joints and features machined from solid steel. This problem occurs for both traditional methods (e.g. the local strain approach) and more recent approaches (e.g. critical distance methods). The degree of conservatism is high (often more than a factor of 2 when predicting the fatigue limit stress range), enough to make these methods unusable in practice. The aim of the present paper is to highlight this problem and to suggest some novel specimen designs which can be used to study it. Possible explanations for this effect are discussed briefly; a detailed theoretical analysis of the problem is planned for subsequent publications.
Subfields: Civil and Structural Engineering, Mechanics of Materials
View Paper: https://www.semanticscholar.org/paper/32efc6de1ba35fc85f013c2119d3f29d5f7cb0a6
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In Mechanics of Materials
Citations in the corpus
- The in-plane and out-of-plane stress constraint factors and K − T − Tz description of stress field near the border of a semi-elliptical surface crack (2007, background): “Bellett et al. [ 15 ,16] presented experimental evidence and proved that the commonly two-dimensional (2D) or planar methods for fatigue assessments of notched bodies may lead to conservative predictions when applied to certain 3D geometries.”
- The concentration of stress and strain in finite thickness elastic plate containing a circular hole (2008, methodology): “Considering plates of arbitrary thickness containing V-shaped notches, Berto et al. (2004) presented analytical solutions for the three dimensional stress field in the close neighborhood of the stress concentration region by combining Kotousov and Wang’s solution (2002) for Cz and Filippi et al.’s…”